Protector mechanism for looms



Sept. 21 1926.

. w. s. WELLS PROTECTOR MECHANISM FOR LOOMS 5 Sheets-Sheet 1 Filed Nov. 11. 1922 Sept. 21 1926. 1,600,377

w. s. WELLS I PROTECTOR MECHANISM FOR LOOMS Filed NOV. 11, 1922 3 Sheets-Sheet 2 WITNESS A TTURFJE V :Ilv wvm nvmvron,

ATTORNEY 3 Sheets-Sheet 5 Filed Nov. '11, 1922 W S WELLS PROTECTOR MECHANISM FOR LOOMS Sept. 21 1926.

' scale, taken 1 UNITED .i

WILILYIAM'SQVWELLLSKQE scorn BETnLEnEM, nunsmmm a smme T0 BENiA- MIN EASTWOOD COMPANY, OF PArERsoN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

This invention relates to means vfor stopping a loom in case a shuttle fails to be properly boxed. The ordinary means used for this purpose is a 'feeler device which is normally urged to a position to engage a stopping instrumentality when the batten beats. up i ase the shuttle fails to be properly boxed in one or the other bo'x ben ho' her eh ldl o t f. that p io y theshuttle. But this feeler device imposes normally, an impediment to the shuttle impelling force, and also causes undue" wear of, the shuttle and other parts, because there is 110 medium other thanthe shuttle to .assufme the; pressure of said device .at the momentthe shuttle is impelled fro nonebox. and enters the other My present invention therefore hasfor its object to provide means 1 which at the moment the shuttle is impelled from one boxand entersthe other willbe assumingthe pressure of said device, hus lea ing theshu l li s, t h t e means being made thereupon to releasesaid device so that it can feelfffor the shuttle andif the latter failstobe properly boxed mayiassume theppsition for stopping the loom, Infcarrying out my invention in its bestiforjm said means is 'a detent in the form of spring-pressed lever which normally assume'stliepressure of said device, so that the shuttleiinfleither boxwould be free, and after each flightof the shuttle and before the batten completes its forwardistrol e is moved to temporarily release said deviceto enableit. to ,feelijfor the shuttle and stop the loom, if the shuttle is not properly boxed. In the dra wings': ,t in U L Fig. is a 'front -to-rearsectional view of thegbatten and breast beamof a loom equipped with the improved stopping mechanism; t 1 V .c .Fig. Q'is a sectional view on the line 22 ofE1g.1; W p Fig.3 is a sectional viewon a smaller "ust forward, of the batten; Fig. .4 is a plan view of the right hand shuttle box inFig. 3; a a Fig. 5 is a fragmentary view, partly in section and on a larger scale, of said shuttle box; and, r a i Fig. 6 is a sectional view on the line 66,

.- vIn the drawings, (2., is the frame oft-an loom,

12 its breast beam andfothe usual structure,

PEQTECTQRYMEGHANisM Eon Looms. a lication filed November 11; 1922. Serial manta.

including a batten d; arranged to oscillate towardland from the breast beam, 6 being the pitman by which said structure is reciprocated from the crank shaft of the loom.

(Z is the back wall of each shuttle box and.

whichiat f forms an opening into the interior of thebox and in the recess is arranged a lever 'j fulcrumed to move ona pivot k in a horizontal plane and being normally urged outwardly by a spring Zuntil the inner end of a slot m in the lever engages; a pinn l* ig. 5) The lever j has a rounded tongue 5 projecting into the opening i and adapted to protrude therethrough into the shuttle box upon pressing inwardly on said lever. v, I

0 designates the shuttle; Y

In the batten structure c under the batten journaled i-n the' usual way theprotector shaft p. Thisshaft carries two upstanding 9, one at each end, they being respectively adapted to bearagainst the inner or free ends of'the lever j, and the shaft is normally turned n the direction .to hold the arms pressed against the leversbya spiral sprihgjr coiled about the shaftg and secured at one end to the structure candatthe other end to I a collar s secured on said shaft. The ;pr otector shaft, carries two daggers If, each ,jin the present case arranged on'the shaft in ahousing 0', formed therefor in the batten-includingstructure 0. I v d V The controller of the loom is here represented as a'rock shaft a, carrying a handle ofand journaled in theframe a under the breast beam. In the loom frame under the breast beam issecureda bracket w for a lbunter mechanism of well-known construction, the essential elements, of which area lever 00 to be engaged in its notch 00' by one of thedaggers t andadapted when so en- 7 'a ed to act a ainstaset screw on the con- Z' D t H J if l r f o.s ft ela tsr to te ihe 00m and a buffer slide a suitably-coupled with the lever and backed by a rubber cushion 2. There is one of these bunter mechanisms for each dagger.

Forming a part of what I term the feeler device, which also includes parts 29, g and t, and secured on the shaft 9 is a bent arm 3 which extends rearwardly and then upwardly and at its free end has a hardened plate u secured thereto so that it projects forwardly and forms in effect a hook. When the batten is nearly at its forward iimit this arm is adapted to bear upon a roller 4 secured to the frame. On the pivot 5 between the structure 0 and one of the pitman c isarranged to oscillate a bell crank lever 6, which constitutes what 1 term the detent. This lever has one arm 6" depending toward the arm 3 and provided at its free end with an angular hardened plate 6 which coacts hook-fashion with the hook 3 of arm 3. The other arm 6 of the lever 6 has a set screw 7 against which the pitman 6 may abut. A spring 8 coiled in the bearing portion 6 of the lever normally tends to turn it in the clockwise direction, being secured at one end to a collar 9 fixed on the stud or pivot 5 and at the other end to the lever.

Operations-The feeler device normally tends to exert pressure on the lever j of each shuttle box and so on the shuttle if present in either box. But this tendency, excepting for a short are when the batten is about half way of its forward movement and which the pitman e enters after the shuttle is impelled from one box to the other, is constantly resisted by the detent whose hook 6 opposes movement of said feeler device in the direction of the arrow in Fig. 1 because said hook then dogs the hook 3. During movement of the pitman through said are it is impinging against the set screw 7 and so shifts the detent against the tension of its spring 8 so that the feeler device is tripped. If the shuttle is properly boxed in either box there will then be no movement of the feeler device sufficient to raise the dagger into position'to encounter the bunter mechanism, although there. will be a slight yielding as to the elastic extremities g of arms 9 and the yielding of the springs Z, which usually will bring the hook 3 too low to be again dogged by the hook 6 when the detent returns so that the feeler device will again be so dogged only on being shifted backward to permit its becoming again cocked orheld by the detent. If the shuttle is improperly boxed movement of the feeler device sufficient to raise the dagger into position to encounter 'feeler device after performing its feeling or detecting movement will encounter the roller 4 and be shiitedback, contrary'to the pres sure of its spring 1 until it can be caught and again held by the detent, which by this time the pitman has again cleared. Thus in each cycle or back and forth movement of the batten-the feeler device is held retracted for amore or less extent of the cycle so that the impelling of the shuttle and its entry into a box are free of such device, and during the remainder of the cycle the said device is released for detecting or feeling and, if re quired, for stopping the loom, and thereupon returned and heldin its retracted state.

Otherwise stated, instead of the feeler device (which, although its ultimate function is to stop the loom in the present example, is broadly speaking a detector) being constantly urged toward the detecting posi tion to the end that it would actually assume and remain in that position throughout each cycleof the batten if the shuttle were absent in either box, said device or detector is made subject to the control of means which urges 1t first toward and then from detecting position on each back-and-forth movementor cycle of the batten, such means being here afforded by spring 9" and the roller 4; in the present example, moreover, said spring normally urges the detector into said position and when it is urged therefrom by the means an is further locked in the new position and there retained until, at a later point in the same cycle or back-and-forth movement of the batten, the locking means (detent 6) is caused by the pitman to release the detector.

Hook 6 has a depending lip as shown in Fig. l to prevent this hook in any event overriding hook 3 andso preventing return of the feeler device under influence of roller 4.

The rotation of the crank shaft of the loom illustrated is counter-clockwise.

Having thus fully described my inven tion, what I claim as new and desire to se cure by Letters Patent is 1. The combination, with the fixed strucdetector in'the retracted position-and means at a later. point in each such back-and-forth movement to cause release of the detector from the last-1iamed means.

2. The combination, with the fixed structure of a loom, a batten movable therein and having a shuttle box, and a shuttle movable on the batten into and out of the box, of adetector movable on the batten into and out of and normally urged into position to detect presence or absence of a shuttle in the box, means on said fixed structure to retract the detector from said position at one point in each back-and-forth movement of the batten, means to lock said detector in the retracted position and means at a later point in each such'back-and-forth movement to cause release of the detector from the last-named means.

3. The combination, with the fixed structure of a loom, a batten movable therein and having a shuttle box, and a shuttle movable on the batten into and out of the box, of a detector movable on the batten into and out of and normally urged into position to detect presence or absence of a shuttle in the box, means to retract the detector from said position at one point in each back-and- :Eorth movement of the batten, means to lock said detector in the retracted position and means to move the batten back and forth and at a later point in each such back-andforth movement cause release of the detector from the last-named means.

In testimony whereof I affix my signa 25 ture.

WILLIAM s. WELLS. 

